I feel like a different person since my mum passed away, like I'm driving a ship with my husband alongside me and we're leading these four children into unknown waters.

I think it took me a little while to be true to myself as a designer, and in some ways I'm still trying to do that. I have to choose things that come naturally to me. Whenever I challenge something too much or try too hard, it never quite works out.

I wanted to feel good about the way I looked. I didn't understand why style had to be sacrificed for sports technology. I found when going to the gym women were wearing their own tees, without the technology. I started to think, does it make you run faster if you wear that terrible color or sweat less if you wear that horrible fabric? And I challenged it, and the answers were not there to why we were being given poor design work. It was something I wanted to bring to women's wardrobes.

A little black dress is something to rely on. To fill you with confidence and ease. To have an attitude that is pure and effortless, yet sexy and classy.

I'd rather people turn up than not. And of course I'd rather have people be enthusiastic.

I get a real kick out of it, seeing people wear my designs.

The consumption of animals - whether you're wearing them or eating them - is extraordinarily damaging to the planet. There are over a billion animals killed a year for food, half of which don't even get eaten. And there's over 50 million animals killed just for fashion.